Geese, Ducks and Coots

• Main Author: Cummings, John L.
• Format: Text
• Language: unknown
• Published: DigitalCommons@University of Nebraska - Lincoln 2016
• Subjects: American coot; bird aircraft strikes; Canada goose; control techniques; crops; damage; economic damage; mallard; management; rice; rye grass; snow goose; soybeans; wig-eon; and winter wheat; Animal Sciences; Behavior and Ethology; Biodiversity; Ecology and Evolutionary Biology; Other Animal Sciences; Other Ecology and Evolutionary Biology; Population Biology; Terrestrial and Aquatic Ecology; Arctic; Canada; Canada Goose
• Online Access: https://digitalcommons.unl.edu/nwrcwdmts/4; https://digitalcommons.unl.edu/context/nwrcwdmts/article/1003/viewcontent/FINAL_GeeseDucksCoots_WDM_Technical_Series_Aug2016.pdf

Canada geese, snow geese, ducks, and American coots all have been implicated in agricultural crop and turf damage. Canada geese and snow geese that graze on winter wheat and rye crops can reduce subsequent grain and vegetative yields. Canada geese also cause serious damage to sprouting soybeans in spring and to standing cornfields in the autumn. The most common damage to agricultural resources associated with geese results from consumption of crops. Other impacts involve unacceptable accumulations of feces in pastures, trampling of emerging crops, and increased erosion and runoff from fields where the cover crop has been grazed. Canada geese graze on a variety of crops, including alfalfa, barley, beans, corn, soybeans, wheat, rye, oats, spinach, and peanuts, sometimes resulting in significant reductions in yields. Since the dramatic increase in snow goose populations, there has been extensive damage to their breeding habitat in the in the Arctic and tremendous grazing pressure on exposed crops and vegetation during the early spring migration. Most damage results from grubbing, trampling, and uprooting and occurs along the migration route on the eastern coastal areas, and in the mid-western and southern states. In addition, agricultural producers are concerned that geese spread noxious seeds to crop and pasture lands and reduce livestock forage. During the fall, winter, and early spring, large flocks of ducks and American coots migrate into California where they damage small grains and alfalfa. Most damage is from grazing on alfalfa or sprouting grain. In the fall, large flocks of ducks and American coots alighting in un-harvested rice fields trample and consume the crop. Prior to the 1990s, ducks and geese had been reported to cause as much as $6 million to $10 million in damages to grains that are swathed and laid on the ground before harvesting. Most of this damage occurred in the Canadian Provinces and Dakotas. However, changes in harvesting techniques in the 1990s from swathing to straight- or ...